Wrench



April 17, 1928. 1,666,879

V. BARTON WRENCH Filed Sept. 17, 1925 .HIIIIIH INVENTOR 1 Vince/w flal' o u.

ATTORNEYS INCENT BARTON, or

PATENT OFFICE.

oAnILLAc, MICHIGAN.

WRENCH.

Application filed September The invention relates to improvements in wrenches of the quick adjusting type, which may be adjusted by loosening a wingnut and sliding jaw where ever desired, and in which when the wing nut is set the wrench will not slip.

The invention has for one of its objects to improve and simplify the construction of devices of this character so as to be comparatively easy and inexpensive to manufacture, of durable and substantial design, and composed of few parts. 7

Another object of the invention is the provision of a Wrench having a serrated shank with which a serrated gripping clutch block is adapted to engage, for holding the movable jaw in set position.

Another object of the invention is the provision of a wrench having a serrated shank with which a serrated gripping block movably mounted in the movable jaw is adapted to engage for holding such jaw in fixed position by a wing nut on a bolt passing through cheek'plates and gripping block and binding against the plates, which nut may be closed when it is desired to adjust the movable With these and other objects in view the invention consists inthe structure, arrangement and combination of parts as will be more fully set forth and pointed out in the appended claims. e

In the accompanying drawings Figure. 1 is a side elevation of a wrench with my improvements applied,

Figure 2 is a side elevation of the movable aw. 1 Figure 3 is a side view of one of the movable jaw cheek plates.

Figure 4 is a similar view of the other cheek plate.

Figure 5 is a side view of the clutch block.

Figure 6 is a view of the locking bolt and nut.

Referring to the drawings 1 denotes the shank of the wrench having at one end the rigid jaw 1 which end is provided along its outer edge with the serrations 1 On the inner edge of the shank is held the sliding or movable jaw 6 by means of the stay or cheek plates 2 and Sand the serrated clutch or gripping block3, which is heldbetween the cheek plates 2 and 8 by the carriage bolt 4 and the wing nut P.

The cheek plates 2 and 8 are similar in shape and along the edges which are at- 17, 1925. Serial No. "56,838.

tached to the movable jaw, are provided with the slots 2 and S andrivet apertures 2 and 8 respectively. The ear portion of cheek plate 2 is provided with a round rivet opening 2, while the ear of cheek plate 8 is provided with the square opening 8 to receive the squared head portion of the carriage bolt 4 which passes through the clutch or gripping block 3; the purpose of this squared portion is to prevent turning of the bolt 4, and the bolt is held in place by the wing nut 4 screwed on the threaded end of the bolt and against the .cheek plate 2.

The movable jaw 6 is provided with the openings 6 and 6 in alinement'; in the opening 6 is held the pin 7 which projects through jaw 6 and into the slots 2 and 8 the size of the pin being such as to permit a slight movement of the cheek plates working pivotally on the rivet 5 extending through and held in opening 6, to free the block 3 from the'serrated shank, when it is desired to adjustv the movable jaw 6, the slots 2 and '8 being obliquely disposed to permit this operation.

In order to adjust the wrench the wing nut is loosened, and the cheek pieces rocked on pivot 5 thus carrying block 3 away from shank 1 sufficiently to free the serrations of clutch block 3 from the serrations 1"; the wrench can now be operated by placing the two front fingers of the left hand on block 3 and the thumb over the movable jaw and cheek plates; this leaves the right hand free to manipulate the wing nut P. By tightening this nut to bind against the cheek plate-the block3 will be rigidly and immov- I ably clamped between the cheek plates when ever set. By loosening nut l and rocking the plates on pivot 5 any adjustments can be made. Y

From the foregoing it will be seen that I provide a wrench that can be cheaply produced, is simple in construction and opera tion, comprising few parts, and can be adj usted much quicker, thus making it superior to theordinary monkey wrench in common use.

Having thus described my invention, what I claim is: 1. In a wrench, the combination of a shank having serrations along one edge and a fixed jaw at I one end, a movable jaw provided with cheek plates movably mounted on the movable jaw and having oblique slots, said movable jaw also carrying a pin projecting l'atel ally therefrom andla'dapted to play in said slots in the cheek plates but frietionally held in said slots against casual play, a serrated clutchblook harried between the free ends of cheek plates on a bolt, and means mounted on the bolt for exerting pi'essure on the cheek plates and clamping the cheek plates against the lnth'bloe'k tol'ook the block in interlockedengagement With the serrated shank, "whereby the movable a'W is immoirah ly h eld.

, Wr th f' mp i 'e j i kll ins a fiXed aw at one end, a movable aw havf g j l kzlii t l i ia bit th iei p faces of said shank and slidably mounted on i's'ai d shank, a clutch block movably held betwee'n'said heek plates, said shank and block endmeieteiMn th clutchhltnl: in .n. l olged engagement with the serrations of the shank. 

